PCB circuit board wiring is an important step before PCB production, which will directly affect the processing quality of subsequent PCB circuit boards. So, what are the tips for PCB circuit board wiring?
1. Reasonably handle the relationship between power supply and ground wire
The interference caused by improper handling of power supply and ground wire will degrade the performance of the product; therefore, the wiring of power supply and ground wire should be taken seriously, and the noise interference generated by power supply and ground wire should be minimized to ensure the safety of the product. quality.
2. Internally deal with the issue of shared ground between digital ground and analo ground
The frequency of the digital circuit is high, and the sensitivity of the analo circuit is strong; the problem of digital and analo common ground must be dealt with inside the PCB, and there is only one connection point between the digital ground and the analo ground.
3. Wiring on the electrical (ground) layer
The power layer should be considered first, and the ground layer second.
4. Large-area conductors are connected with the legs of components
There will be some hidden dangers in the welding and assembly of components, which may easily cause virtual solder joints. The solution is to make a cross flower pad, commonly known as a thermal pad.
5. The wiring is determined according to the network system
There must be a grid system with reasonable density to support the wiring.
6. The wiring design needs to be checked carefully
The inspection contents include: Is the distance between the line and the line, the line and the component pad, the line and the through hole, the component pad and the through hole, the through hole and the through hole reasonable? Is the width of the power line and the ground line appropriate? Are the lines tightly coupled? Is there room in the PCB where the ground lines can be widened, etc.
